Hi,

Both TaB as well as TaB2 have melting points more than 3300 K. You can find it in the image below.

Thank you very much Dr Anirudha Karati . Is this data from a publication? Can you share details of the paper if it is from a paper?

Thank you very much

No Dr Sajjad Ur Rehman ! This is from Fact Sage database.

You may want to check the B―Ta phase diagram reported by H. Okamoto (1990), at: Hugh Baker and Hiroaki Okamoto (Eds.), "ASM Handbook", Vol. 3, "Alloy Phase Diagrams", ASM International, 1992. Last ed. 2016: DOI: https://doi.org/10.31399/asm.hb.v03.a0006209

Thank you Prof. Carlos Araújo Queiroz

Another B―Ta phase diagram, developed by Kieffer and Benesovsky, is available from: J.J. English, "Binary and Ternary Phase Diagrams of Columbium, Molybdenum, Tantalum, and Tungsten", DMIC Report 152, Defense Metals Information Center, Battelle Memorial Institute, Columbus, Ohio; April 28, 1961, p. 58; apud: R. Kieffer, F. Benesovsky, "Recent developments in the field of silicides and borides of the high-melting-point transition Metals", presented before the Powder Metallurgy Joint Group of the Iron and Steel Institute and the Institute of Metals, London, December 1958. Also in: F.F. Schmidt, "Tantalum and Tantalum Alloys", DMIC Report 133, idem; July 25, 1960, p. 59.